Envelope

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Envelope

In technical analysis, two moving averages of a security's price indicating its upper and lower limits. That is, a price tends not to move above the higher moving average or below the lower moving average. Analysts use envelopes to help them determine buy and sell signals. When a price reaches the higher moving average, analysts may declare a sell signal, while they may declare a buy signal when a price reaches the lower moving average.
References in periodicals archive ?
Tim has continually pushed the envelope of tunable laser technology," said Jean-Marc Verdiell, Intel Fellow and Director of Optical Technology.
Gianni Versace, the Italian-born fashion designer shot to death outside his Miami Beach home Tuesday, was known for his bold use of color, skin-baring fabrics and sexy silhouettes that pushed the envelope.
In making the move, Mattea, who scored Grammy awards for Best Female Country Vocal Performance in 1990 and Best Southern Gospel, Country Gospel or Bluegrass Gospel Album in 1993, said "I have always had eclectic musical tastes, and I've pushed the envelope over the years, experimenting with different influences and instrumentation.